11K for 77K miles seems reasonable to me. It does really depend upon condition-- especially rust. Not only cancer rust in the floors and fenders etc. Rusty bolts that break are really a pain when adding off road equipment or just working on the vehicle. Personally, I would stay away from a rusty vehicle. However, it's not clear, from your description if the vehicle you're considering has much rust. We would really need more information, like service records, AND photos to help you out. Timing belt will need replaced in about 13K miles I believe. Kelly Blue Book and Edmunds car evaluator would also be helpful to see if you're in the ball park. Lastly, paying a mechanic to evaluate the vehicle is well worth the cost so you know what you'r in for or to walk away.